參數(shù)資料
型號(hào): M29DW640F70N6F
廠商: STMICROELECTRONICS
元件分類: PROM
英文描述: 4M X 16 FLASH 3V PROM, 70 ns, PDSO48
封裝: 12 X 20 MM, LEAD FREE, PLASTIC, TSOP-48
文件頁(yè)數(shù): 68/74頁(yè)
文件大小: 556K
代理商: M29DW640F70N6F
Block protection
M29DW640F
Figure 21.
Programmer Equipment Chip Unprotect flowchart
1.
Block Protection Groups are shown in Appendix D, Table 24.
PROTECT ALL
GROUPS
AI07757
A6, A12, A15 = VIH(1)
E, G, A9 = VID
DATA = 00h
W = VIH
E, G = VIH
ADDRESS = CURRENT
GROUP ADDRESS
A0, A2, A3 = VIL
A1, A6 = VIH
Wait 10ms
INCREMENT
CURRENT GROUP
n = 0
CURRENT GROUP = 0
Wait 4s
W = VIL
++n
= 1000
START
YES
NO
LAST
GROUP
YES
NO
E = VIL
Wait 4s
G = VIL
Wait 60ns
Read DATA
FAIL
PASS
Verify
Unprotect
Set-up
End
A9 = VIH
E, G = VIH
A9 = VIH
E, G = VIH
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